Head Boy means speaking to everyone and watching everyone and saying, "I would think not," in a very loud voice, with never, ever, more than five sentences to a single person.

Percy prepared for this.

Head Boys were Head Boys three seconds after birth, when they thought, "Is that all?" and blinked, unimpressed.

Head Boys don't get fucked, don't say fucked, don't fall in love.

Oliver says, "Seven years. It's funny. I don't even know you," and Percy says, "I know you," and it's a lie, and they could have been so many things. But he is who he is.